Drying system

Abstract

The embodiment of the utility model provides a drying system, and relates to the food drying field, the drying system comprises a drying tower, an equipment room, an air energy heat pump and a first heat exchange device, the equipment room is provided with a first working chamber and a second working chamber which are mutually separated, the air energy heat pump comprises an evaporation module and a condensation module which are mutually communicated; the evaporation module is arranged in the first working chamber, the condensation module is arranged in the second working chamber, and the first heat exchange device is arranged in the first working chamber; the first heat exchange device is provided with an inlet end and an outlet end, the inlet end is communicated with the tower exhaust end, and the outlet end is communicated with the evaporation module. The drying system provided by the embodiment of the utility model can stably run in a low-temperature environment, and is low in running cost, energy-saving and environment-friendly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of drying system, specifically, relate to a drying system. BACKGROUND

[0002] Air source heat pump drying technology is a kind of high-efficiency energy-saving drying scheme using the principle of reverse Carnot cycle, absorbing low-grade heat energy from ambient air, and providing high-temperature drying hot air to target drying objects after temperature rising by compressor work.Based on the principle of heat pump, heat absorption-heat release is realized by refrigerant circulation, evaporator absorbs heat from the environment, and condenser releases high-temperature heat to target objects, thereby realizing the drying of target objects.

[0003] The inventor found that when the drying device is in a low-temperature working environment (temperature is about lower than 5℃), such as in cold northern areas, the evaporator will be blocked by frost, the heat exchange area will be lost, and the heat absorption will be insufficient, which leads to the fact that conventional air source heat pump dryers cannot operate stably in a low-temperature operating environment, and the energy consumption is very high in this environment. UTILITY MODEL CONTENT

[0004] The problem to be solved by the utility model is to provide a drying system that can operate stably in a low-temperature operating environment with low operating cost, energy saving and environmental protection.

[0005] To solve the above technical problems, the utility model provides a drying system, which comprises:

[0006] A drying tower, the drying tower has a tower air inlet end and a tower air outlet end;

[0007] An equipment room, the equipment room has a first working chamber and a second working chamber separated from each other;

[0008] An air energy heat pump, the air energy heat pump comprises an evaporation module and a condensation module in communication with each other, the evaporation module has a first evaporation port, a second evaporation port and a third evaporation port, the evaporation module is arranged in the first working chamber, the condensation module is arranged in the second working chamber, the condensation module has a first condensation port, a second condensation port and a third condensation port, the first condensation port is used for the entry of fresh air, the second condensation port is in communication with the second evaporation port, and the third condensation port is in communication with the tower air inlet end;

[0009] A first heat exchange device, the first heat exchange device is arranged in the first working chamber, the first heat exchange device has an inlet end and an outlet end, the inlet end is in communication with the tower air outlet end, and the outlet end is in communication with the first evaporation port.

[0010] Optionally, the evaporation module comprises a body, an evaporation fan, an exhaust pipe and a heat pump connecting pipe, the first evaporation port and the second evaporation port are arranged on the body, the evaporation fan is installed on the body and communicates with the exhaust pipe, one end of the exhaust pipe is located outside the first working chamber, and two ends of the heat pump connecting pipe respectively communicate with the second evaporation port and the second condensation port.

[0011] Optionally, the first heat exchange device is a heat exchange filter bag.

[0012] Optionally, the drying system further comprises a fresh air pipeline and a first air inlet, the first air inlet is arranged at the top of the second working chamber, and one end of the fresh air pipeline extends through the first air inlet and communicates with the first condensation port.

[0013] Optionally, the drying system further comprises an exhaust pipeline and a second air inlet, the second air inlet is arranged at the top of the first working chamber, one end of the exhaust pipeline communicates with the inlet end of the tower exhaust end, and the other end extends through the second air inlet and communicates with the inlet end of the first heat exchange device.

[0014] Optionally, the drying system further comprises a second heat exchange device, the second heat exchange device has a first inlet end, a first outlet end, a second inlet end and a second outlet end, the fresh air pipeline has a first communication pipeline and a second communication pipeline, the exhaust pipeline has a third communication pipeline and a fourth communication pipeline, one end of the first communication pipeline is used for the entry of fresh air, the other end communicates with the first inlet end, two ends of the second communication pipeline respectively communicate with the first outlet end and the first condensation port, two ends of the third communication pipeline respectively communicate with the tower exhaust end and the second inlet end, and two ends of the fourth communication pipeline respectively communicate with the second outlet end and the inlet end of the first heat exchange device.

[0015] Optionally, the fresh air pipeline has a fifth communication pipeline, two ends of the fifth communication pipeline respectively communicate with the third condensation port and the tower air inlet end.

[0016] Optionally, the drying system further comprises a circulating fan, and the circulating fan is arranged on the path of the fifth communication pipeline.

[0017] Optionally, the first heat exchange device is arranged at the top area of the first working chamber.

[0018] Optionally, the heat pump connecting pipe is a copper pipe.

[0019] Compared with the prior art, the drying system has the following beneficial effects:

[0020] The drying system comprises a drying tower, a device room, an air energy heat pump and a first heat exchange device, the drying tower has a tower air inlet end and a tower air outlet end. The device room has a first working chamber and a second working chamber which are separated from each other. The air energy heat pump comprises an evaporation module and a condensation module which are communicated with each other, the evaporation module has a first evaporation port, a second evaporation port and a third evaporation port, and the evaporation module is arranged in the first working chamber; the condensation module is arranged in the second working chamber, and the condensation module has a first condensation port, a second condensation port and a third condensation port, the first condensation port is used for the entry of fresh air, the second condensation port is communicated with the second evaporation port; and the third condensation port is communicated with the tower air inlet end. The first heat exchange device is arranged in the first working chamber, and the first heat exchange device has an inlet end and an outlet end, the inlet end is communicated with the tower air outlet end, and the outlet end is communicated with the first evaporation port.

[0021] The air energy heat pump is combined into the drying system by using the heat pump principle, and the heat energy of the exhaust air which is higher than the ambient temperature and is discharged from the drying tower is collected and utilized. The air energy heat pump comprises an evaporation module and a condensation module, and the two are arranged in different working chambers which are separated from each other in the device room. The first heat exchange device is arranged in the first working chamber, and the heat of the exhaust air discharged from the drying tower is used to heat the first chamber, so that the evaporation module arranged in the first chamber is in a suitable working temperature, and the normal operation of the evaporation module is ensured. The drying system provided in the embodiment of the present application can make the system run at low cost in a low-temperature environment without affecting the overall system efficiency, and the overall operation cost is low, and energy saving and environmental protection are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 The structure diagram of the drying system provided in the embodiment of the present application.

[0024] Icon: 100 - drying system; 10 - drying tower; 101 - tower air inlet end; 102 - tower air outlet end; 20 - equipment room; 201 - first working chamber; 202 - second working chamber; 30 - air energy heat pump; 301 - evaporation module; 3011 - first evaporation port; 3012 - second evaporation port; 3013 - third evaporation port; 302 - condensation module; 3021 - first condensation port; 3022 - second condensation port; 3023 - third condensation port; 40 - first heat exchange device; 3015 - body; 3017 - evaporation fan; 3018 - exhaust pipe; 3019 - heat pump connecting pipe; 501 - fresh air pipe; 502 - exhaust air pipe; 5011 - first communication pipe; 5012 - second communication pipe; 5021 - third communication pipe; 5022 - fourth communication pipe; 5013 - fifth communication pipe; 2011 - first air inlet; 2021 - second air inlet; 60 - second heat exchange device; 601 - first inlet end; 602 - first outlet end; 603 - second inlet end; 604 - second outlet end; 701 - circulating fan. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0027] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0029] In addition, if the terms "first", "second" and the like are used herein, they are merely used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0031] Please refer to Figure 1 The present application embodiment provides a drying system 100 for drying corn seeds.

[0032] The drying system 100 comprises:

[0033] A drying tower 10, the drying tower 10 has a tower air inlet end 101 and a tower air outlet end 102;

[0034] A device room 20, the device room 20 has a first working chamber 201 and a second working chamber 202 separated from each other;

[0035] An air energy heat pump 30, the air energy heat pump 30 comprises an evaporation module 301 and a condensation module 302 in communication with each other, the evaporation module 301 has a first evaporation port 3011, a second evaporation port 3012 and a third evaporation port 3013, the evaporation module 301 is arranged in the first working chamber 201, the condensation module 302 is arranged in the second working chamber 202, the condensation module 302 has a first condensation port 3021, a second condensation port 3022 and a third condensation port 3023, the first condensation port 3021 is used for the entry of fresh air, the second condensation port 3022 is in communication with the second evaporation port 3012, and the third condensation port 3023 is in communication with the tower air inlet end 101;

[0036] A first heat exchange device 40, the first heat exchange device 40 is arranged in the first working chamber 201, the first heat exchange device 40 has an inlet end and an outlet end, the inlet end is in communication with the tower air outlet end 102, and the outlet end is in communication with the first evaporation port 3011.

[0037] By arranging the evaporation module 301 and the condensation module 302 of the air energy heat pump 30 in the separated first working chamber 201 and the second working chamber 202 respectively, and arranging the first heat exchange device 40 and the evaporation module 301 in the same working chamber, the high-temperature waste gas from the drying tower 10 can heat the first working chamber 201, so that the evaporation module operates efficiently at a suitable working temperature. The working temperature of the condensation module 302 is generally greatly different from that of the evaporation module 301, about 10-20℃, so arranging the two in different working chambers is beneficial to energy saving and consumption reduction and efficient operation of the drying system 100.

[0038] Optionally, the evaporation module 301 comprises a body 3015, an evaporation fan 3017, an exhaust pipe 3018 and a heat pump connecting pipe 3019, the first evaporation port 3011 and the second evaporation port 3012 are arranged on the body 3015, the evaporation fan 3017 is installed on the body 3015 and communicates with the exhaust pipe 3018, one end of the exhaust pipe 3018 is located outside the first working chamber 201, and two ends of the heat pump connecting pipe 3019 respectively communicate with the second evaporation port 3012 and the second condensation port 3022.

[0039] The evaporation fan 3017 is arranged on the body 3015, the body 3015 is an evaporator, which can force air to flow quickly through the fins of the evaporator for heat exchange, thereby significantly improving the heat absorption efficiency of the evaporator, and can also achieve the effect of dehumidification: when humid air flows through the fins of the low-temperature evaporator (usually at a temperature lower than the dew point temperature of the air), the water vapor in the air condenses into water droplets on the surface of the fins, thereby achieving dehumidification.

[0040] Optionally, the first heat exchange device 40 is a heat exchange filter bag.

[0041] The exhaust gas discharged from the tower exhaust end 102 of the drying tower 10 generally contains a large amount of water vapor and dust, and the heat exchange filter bag with a closed end can achieve the effect of dust interception, and the high-temperature exhaust gas discharged from the mesh of the filter bag can directly exchange heat with the first working chamber 201, thereby achieving the purpose of heating the first working chamber 201. In order to facilitate the discharge of dust and other impurities in the heat exchange filter bag, the heat exchange filter bag is preferably designed with a closed end.

[0042] Optionally, the drying system 100 further comprises a fresh air duct 501 and a first air inlet 2011, the first air inlet 2011 is arranged at the top of the second working chamber 202, and one end of the fresh air duct 501 extends through the first air inlet 2011 and communicates with the first condensation port 3021.

[0043] Fresh air enters the drying system 100 from the fresh air duct 501, specifically, enters the second working chamber 202 along the fresh air duct 501, exchanges heat with the condensation module 302, and the fresh air is heated to about 20-30℃ after passing through the condensation module 302. The condensation module 302 is a condenser.

[0044] Optionally, the drying system 100 further comprises an exhaust gas duct 502 and a second air inlet 2021, the second air inlet 2021 is arranged at the top of the first working chamber 201, one end of the exhaust gas duct 502 communicates with the inlet end of the tower exhaust end 102, and the other end extends through the second air inlet 2021 and communicates with the inlet end of the first heat exchange device 40.

[0045] The new air inlet at a high position can capture air with higher temperature and less pollutants, and can reduce the energy consumption of the fan, so the new air generally enters the system from a high position. And the new air enters through the second air inlet 2021 at the top of the second working chamber 202, and exchanges heat with the condensing module 302.

[0046] Optionally, the drying system 100 further comprises a second heat exchange device 60, the second heat exchange device 60 has a first inlet end 601, a first outlet end 602, a second inlet end 603 and a second outlet end 604, the fresh air pipeline 501 has a first communication pipeline 5011 and a second communication pipeline 5012, the exhaust gas pipeline 502 has a third communication pipeline 5021 and a fourth communication pipeline 5022; one end of the first communication pipeline 5011 is used for the entry of fresh air, and the other end is in communication with the first inlet end 601, the two ends of the second communication pipeline 5012 are in communication with the first outlet end 602 and the first condensing port 3021 respectively; the two ends of the third communication pipeline 5021 are in communication with the tower exhaust end 102 and the second inlet end 603 respectively, and the two ends of the fourth communication pipeline 5022 are in communication with the second outlet end 604 and the inlet end of the first heat exchange device 40 respectively.

[0047] The high-temperature exhaust gas from the tower exhaust end 102 is used to preliminarily exchange heat with the fresh air entering the system, which can greatly improve the heat exchange efficiency of the secondary heat exchange of the fresh air and the condensing module 302, and realize the energy cascade utilization of energy. Preferably, the second heat exchange device 60 is a sensible heat exchanger.

[0048] Optionally, the drying system 100 further comprises a fifth communication pipeline 5013, the two ends of the fifth communication pipeline 5013 are in communication with the third condensing port 3023 and the tower gas inlet end 101 respectively.

[0049] The fresh air is heated twice by the second heat exchange device 60 and the condensing module 302 in the fresh air pipeline 501, so that the heat of the system exhaust gas is efficiently utilized, and the system energy efficiency is greatly improved.

[0050] Optionally, the drying system 100 further comprises a circulating fan 701, and the circulating fan 701 is arranged on the path of the fifth communication pipeline 5013.

[0051] In this embodiment, the drying system 100 provides gas power through the circulating fan 701; in other embodiments, a fan can be additionally arranged in the fresh air pipeline 501 and the exhaust gas pipeline 502 respectively to realize the directional circulation and pressure balance of the gas in the drying system 100.

[0052] Optionally, the first heat exchange device 40 is arranged at the top region of the first working chamber 201.

[0053] The first heat exchange device 40 is arranged at the top region of the first working chamber 201, so that the hot air is prevented from being retained at the bottom of the chamber to cause local overheating, and the temperature field of the first working chamber 201 is homogenized.

[0054] Optionally, the heat pump connecting pipe 3019 is a copper pipe.

[0055] The copper pipe has super high heat conductivity, pressure resistance, sealing property and corrosion resistance, and has no chemical reaction with common refrigerants (such as R22, R410A and R32), so that no deposit is generated to block the pipe, and therefore the heat pump connecting pipe 3019 is preferably made of copper.

[0056] According to the drying system provided by the embodiment, the working principle is as follows:

[0057] The high-temperature exhaust gas discharged from the drying tower 10 enters the second heat exchange device through the tower exhaust end 102, is exchanged in the second heat exchange device 60, and then directly exchanges heat with the first working chamber in the first heat exchange device 40, and finally the exhaust gas is discharged after passing through the evaporation module 301 and the exhaust pipe 3018 in sequence.

[0058] The fresh air enters the second heat exchange device 60 through the fresh air pipeline 501, exchanges heat with the high-temperature exhaust gas in the second heat exchange device 60 to increase the temperature of the fresh air entering the system, and is further heated by the condensation module 302 after entering the condensation module 302 through the second connecting pipeline 5012, and finally enters the drying tower 10 to dry the corn kernels under the action of the circulating fan 701.

[0059] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A drying system (100), characterized in that, The drying system (100) comprises: a drying tower (10) having a tower air inlet end (101) and a tower air outlet end (102); a device room (20) having a first working chamber (201) and a second working chamber (202) separated from each other; an air energy heat pump (30) comprising an evaporation module (301) and a condensation module (302) in communication with each other, the evaporation module (301) having a first evaporation port (3011), a second evaporation port (3012) and a third evaporation port (3013), the evaporation module (301) being arranged in the first working chamber (201); the condensation module (302) being arranged in the second working chamber (202), the condensation module (302) having a first condensation port (3021), a second condensation port (3022) and a third condensation port (3023), the first condensation port (3021) being used for the entry of fresh air, the second condensation port (3022) being in communication with the second evaporation port (3012); the third condensation port (3023) being in communication with the tower air inlet end (101); a first heat exchange device (40) arranged in the first working chamber (201), the first heat exchange device (40) having an inlet end and an outlet end, the inlet end being in communication with the tower air outlet end (102), and the outlet end being in communication with the first evaporation port (3011).

2. The drying system (100) according to claim 1, characterized in that The evaporation module (301) comprises a body (3015), an evaporation fan (3017), an exhaust pipe (3018) and a heat pump connecting pipe (3019), the first evaporation port (3011) and the second evaporation port (3012) being arranged in the body (3015), the evaporation fan (3017) being installed on the body (3015) and being in communication with the exhaust pipe (3018), one end of the exhaust pipe (3018) being located outside the first working chamber (201), and the heat pump connecting pipe (3019) having two ends in communication with the second evaporation port (3012) and the second condensation port (3022) respectively.

3. The drying system (100) according to claim 1, characterized in that The first heat exchange device (40) is a heat exchange filter bag.

4. The drying system (100) according to claim 1, characterized in that The drying system (100) further comprises a fresh air duct (501) and a first air inlet (2011), the first air inlet (2011) being arranged at the top of the second working chamber (202), one end of the fresh air duct (501) extending through the first air inlet (2011) and being in communication with the first condensation port (3021).

5. The drying system (100) according to claim 4, characterized in that The drying system (100) further comprises an exhaust duct (502) and a second air inlet (2021), the second air inlet (2021) being arranged at the top of the first working chamber (201), one end of the exhaust duct (502) being in communication with the inlet end of the tower air outlet end (102), and the other end extending through the second air inlet (2021) and being in communication with the inlet end of the first heat exchange device (40).

6. The drying system (100) according to claim 5, characterized in that The drying system (100) further comprises a second heat exchange device (60), the second heat exchange device (60) has a first inlet end (601), a first outlet end (602), a second inlet end (603) and a second outlet end (604), the fresh air pipeline (501) has a first communication pipeline (5011) and a second communication pipeline (5012), the exhaust pipeline (502) has a third communication pipeline (5021) and a fourth communication pipeline (5022); One end of the first communication pipeline (5011) is used for the entry of fresh air, and the other end is in communication with the first inlet end (601), and the two ends of the second communication pipeline (5012) are respectively in communication with the first outlet end (602) and the first condensing port (3021); The two ends of the third communication pipeline (5021) are respectively in communication with the tower exhaust end (102) and the second inlet end (603), and the two ends of the fourth communication pipeline (5022) are respectively in communication with the second outlet end (604) and the inlet end of the first heat exchange device (40).

7. The drying system (100) according to claim 6, characterized in that The fresh air pipeline (501) has a fifth communication pipeline (5013), and the two ends of the fifth communication pipeline (5013) are respectively in communication with the third condensing port (3023) and the tower air inlet end (101).

8. The drying system (100) according to claim 7, characterized in that The drying system (100) further comprises a circulating fan (701), and the circulating fan (701) is arranged on the path of the fifth communication pipeline (5013).

9. The drying system (100) according to claim 1, characterized in that The first heat exchange device (40) is arranged at the top region of the first working chamber (201).

10. The drying system (100) according to claim 2, characterized in that The heat pump connecting pipe (3019) is a copper pipe.

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